Well google didn't help.

The airbrush tool in photoshop doesn't seem to saturate.

Thanks

Pressure sensitivity applies to pen tablets

What he means is

An input device must be pressure sensitive for the brush to be pressure sensitive. If you're using a standard mouse (any mouse, that I am aware of), the buttons are not pressure sensitive, or at least they do not measure pressure exerted.

This may not be the case with high-end mice, but if you're going to blow money on a high-end multi-function mouse for digital art, you may as well buy a Wacom (or at least some kind of stylus interface).

tl;dr: Normal mice don't measure pressure exertion, and as such cannot work with pressure-sensitive systems on a machine.

Yeah

Replace pressure sensitive with uh working like a real airbrush. Didn't think u would take it literally. And read beyond the first sentence :3 that explains what I'm really asking

Go to the brush settings and click the airbrush setting

That doesn't really do anything...I mean you would think that would fix it but it still doesn't make the brush darker the longer you hold it down.

Works for me, make sure you aren't using a solid brush

Well, that's cs4 for you.

I use CS2 on my desktop, pretty sure everything works the same

Next time, get the terminology straight. You asked why something wasn't pressure sensitive, not why it doesn't saturate. Don't get huffy with me because you didn't ask the right question.

come on thor he didn't expect you to NOT read his mind and you can't really expect him to know what he's talking about I mean come on

Edited OP to make you guys happy.

post your brush settings bro

ITT I forgot what flow meant for a day.

Problem solved but my inability to read right isn't.